...The search for deputy secretary of state was reopened this month when the expected choice, former deputy treasury secretary Robert Kimmitt, took himself out of the running, three transition sources said. Kimmitt, who had been approved by the then-transition team and Tillerson, withdrew due to a personal family issue, the sources said. The 70-year-old former Army officer had served on the White House National Security Council staff under President Reagan and in the State Department under President George H.W. Bush.
Two leading contenders for the job now are former White House and State Department official Elliott Abrams and former State Department official Paula Dobriansky. That list is not exhaustive and no decisions or announcement is expected until after Tillerson is confirmed, transition sources cautioned.
[source : Trump team narrowing search for State Department’s No. 2 official, Washington Post, https://www.washingtonpost.com/news/josh-rogin/wp/2017/01/25/trump-team-narrowing-search-for-state-departments-no-2-official/, 25th January 2017]